Do red bricks leach into the water?

[ramron67]

I understand that cinder blocks are toxic to fish because they leach chemicals into the water and change the pH. Is the same true for standard red-bricks?

Thanks,

Ram Miller

 

[sissy]

bricks these days are made the same as concrete block and just have a dye added to the mix .Concrete block just change the ph .There are ponds made of concrete and they just seal it

 

[Shdwdrgn]

I've used scraps of concrete in my filters to help keep the pH down and soften the water. Now I'm trying kitty litter. I have also used red bricks in the bottom of my filter to hold up the bottom shelf for the media bags... The bricks were in there for about 3 years with no ill affects.

 

[j.w]

I've got red bricks in my pond raising pots up and my fish seem just fine. They've been in there for years.

 

[Event Horizon]

I am lifting pots with both cinder block and bricks. I have never had any issues (not that I have ever tested my water). I also only have goldfish. Are koi more sensitive than goldfish?

 

[HARO]

I've been told that bricks are a completely different animal than blocks, since blocks are simply concrete which has set, whereas bricks are fired in an oven. I've used bricks extensively for fifty years with no problems.
John